Features:1. Automatically control and constant water pressure.2. Setting pressure through keypad directly.3. Built-in terminal for pressure transmitter,flow sensor and water level switch and etc.4. Built-in PID control method can realize none load shut down(sleep mode).5. No need power cabinet and PLC to realize.6. Multi-Pump auto switch-over and linkage operation.7. Dry water protection and water recovery restart automatically.8. Power on restart after power off.9. Master fault shift automatically.10. Real-time fault parameter record for fault analysis.11. Working hours auto-accumulative total is easy for energy saving analysis and equipment maintenance.12. Complete protection functions and reliability, including under voltage, over voltage, over current, over heat and so on.13. Alternative working on multi-pumps system.